JP2005524030A5 - - Google Patents

Claims (6)

Outer ring,
An inner ring having a central bore sized to align with the dragline swing shaft;
A first plurality of spherical rotating elements and a second plurality of spherical rotating elements, each inserted between the inner ring and the outer ring;
An upper wear-resistant seal ring;
A lower wear-resistant seal ring,
An upper sealing ring;
A lower sealing ring,
At least one contact lip seal;
A sealed spherical roller bearing for a dragline swing shaft of a dragline excavator, comprising at least one contact lip seal retainer.   Each of the inner ring and the outer ring has a first inclined raceway surface and a second inclined raceway surface, and the first inclined raceway surface is spaced from the second inclined raceway surface. And is inclined in opposite directions with respect to the raceway surface, and each of the first and second raceway surfaces has the same curvature as the first and second plurality of spherical rotating elements. The hermetic spherical roller bearing of claim 1, having a curvature. The hermetic spherical roller bearing according to claim 2, wherein the lower wear-resistant seal ring and the inner ring and the upper wear-resistant seal ring and the inner ring are in lock engagement . A first lock offset disposed on the upper wear-resistant seal ring and configured to operatively engage and be secured to the first lock shoulder of the upper wear-resistant seal ring; It is provided on the front surface of the inner ring and is disposed on the lower wear-resistant seal ring so as to be operatively engaged with and fixed to the second lock shoulder of the lower wear-resistant seal ring. The hermetic spherical roller bearing according to claim 3, further comprising a second lock offset configured on the rear surface of the inner ring . Each of the first and second lock shoulders includes an annular lip, a first offset, a first annular groove, a first annular surface, and a first offset surface, and the first and second The sealed spherical roller bearing of claim 4, wherein each of the lock offsets comprises a second annular lip, a second offset, a second annular groove, a second offset surface and a front surface . The inner ring without contact between the end of the lower sealing ring and the at least one contact lip seal retainer and between the flange tip and the at least one contact lip seal retainer; 2. The hermetic spherical roller bearing according to claim 1 , wherein there is a gap for allowing an axial displacement between the outer ring and the outer ring .